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热词
    • 10. 发明授权
    • Vehicle transmission hill holder with releasable one way clutch
    • 车辆传动山体,带可释放单向离合器
    • US4867291A
    • 1989-09-19
    • US212445
    • 1988-06-28
    • James L. HolmanGeorge A. WillfordKurt R. Baer
    • James L. HolmanGeorge A. WillfordKurt R. Baer
    • B60K17/26B60W30/18F16D48/06
    • B60K17/26F16D48/066B60W30/18118F16D2500/10493F16D2500/1082F16D2500/1083F16D2500/30803F16D2500/31493F16D2500/50841Y10T74/19251Y10T74/1926
    • A hill holder device for a vehicle manual transmission includes a releasable one-way clutch which is coupled to the countershaft of the transmission. In particular, the one-way clutch includes a sprag clutch having an inner race secured to the countershaft, and an outer race secured to the vehicle transmission case by means of a releasable locking mechanism. When the locking mechanism is in its locked position, the sprag clutch enables rotation of the countershaft in only one direction. Thus, if the transmission is in a forward gear and comes to a stop on an ascending grade, the hill holder will lock the vehicle drive train and prevent the vehicle from rolling back down the grade, without requiring the driver to apply the brakes. Similarly, if the vehicle is in a reverse gear and is stopped on a descending grade, the hill holder will prevent the vehicle from rolling in a forward direction down the grade. If necessary, the locking mechanism can be unlocked to release the hill holder in order to facilitate shifting in the event torque lock of the vehicle drive train locks the gear shifting components after the hill holder has become engaged on an inclined surface.
    • 用于车辆手动变速器的山坡保持器装置包括联接到变速器的中间轴的可释放单向离合器。 特别地,单向离合器包括具有固定到中间轴的内座圈的楔形离合器,以及通过可释放的锁定机构固定到车辆变速箱的外圈。 当锁定机构处于其锁定位置时,楔形离合器使得只能沿一个方向旋转中间轴。 因此,如果变速器处于前进档位并且在升档时停止,则山体保持器将锁定车辆传动系,并且防止车辆在档次下回退,而不需要驾驶员施加制动。 类似地,如果车辆处于倒档并且在下降档位上停止,则山体保持器将防止车辆沿着档次的向前方向滚动。 如果需要,可以解锁锁定机构以释放山体保持器,以便在车辆传动系的扭矩锁定在山体保持器已经接合在倾斜表面上之后锁定换档部件的情况下便于移动。